Correct Answer: Option C

Explanation

The method used to collect a gas depends on whether it is denser or lighter than air. For example, ammonia gas is collected by downward displacement of air because it is lighter than air. Option C is the correct answer.

Chlorine is heavier than air.

SO\(_2\) is denser than air.

CO\(_2\) is denser than air.

There is an explanation video available below.

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